The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 05, 2021
Filed:
Oct. 31, 2019
Infineon Technologies Ag, Neubiberg, DE;
Florian Grasse, Hohenthurn, AT;
Axel Sascha Baier, Neubiberg, DE;
Wolfgang Bergner, Klagenfurt, AT;
Barbara Englert, Munich, DE;
Christian Strenger, Munich, DE;
Infineon Technologies AG, Neubiberg, DE;
Abstract
A silicon carbide body includes a drift structure having a first conductivity type, a body region, and a shielding region. The body and shielding regions, of a second conductivity type, are located between the drift structure and a first surface of the silicon carbide body. First and second trench gate stripes extend into the silicon carbide body. The body region is in contact with a first sidewall of the first trench gate stripe. The shielding region is in contact with a second sidewall of the second trench gate stripe. The second sidewall has a first length in a lateral first direction parallel to the first surface. A supplementary region of the first conductivity type contacts one or more interface areas of the second sidewall. The one or more interface areas have a combined second length along the first direction, the second length being at most 40% of the first length.